1. a. glossopharyngeal nerve b. vagus nerve c. trigeminal nerve
Which cranial nerve supplies taste buds located in circumvallate papillae?
a. glossopharyngeal nerve
b. vagus nerve
c. trigeminal nerve
d. facial nerve
Answer: a

2. a. visual cortex of the right occipital lobe.
Visual information from the left half of the combined field of vision arrives at the:
a. visual cortex of the right occipital lobe.
b. superior colliculus on the right side.
c. visual cortex of the left occipital lobe.
d. superior colliculus on the left side.
Answer: a

3. What is the role of the auditory ossicles in hearing?
a. They play a major role in equilibrium.
b. They act as levers that conduct vibrations to the inner ear.
c. They vibrate against the round window and distort the perilymph in the vestibular duct.
d. They play no role in hearing.
Answer: b

4. What is the function of the auditory tube?
a. It helps amplify sound waves.
b. It allows bacteria to travel from the oropharynx to the middle ear.
c. It permits equalization of pressure on either side of the tympanic membrane.
d. It secretes cerumen.
Answer: c

5. a. anterior, posterior, and lateral semicircular ducts
Which structures comprise the major subdivisions of the bony labyrinth?
a. anterior, posterior, and lateral semicircular ducts
b. middle ear, inner ear, and membranous labyrinth
c. vestibule, three semicircular canals, and the cochlea
d. vestibule, saccule, and utricle
Answer: c

6. a. in the utricle and saccule
Where are the sensory receptors that respond to rotational movements of the head?
a. in the utricle and saccule
b. in the anterior, posterior, and lateral semicircular ducts
c. in the cochlear duct
d. in the vestibular duct and tympanic duct
Answer: b

7. c. Rods and cones are evenly distributed on the retina.
Which of the following statements correctly describes the location of rods and cones on the retina?
a. Rods are located in the macula lutea, but only cones are located in the fovea.
b. Cones are located at the periphery of the retina, rods at the center.
c. Rods and cones are evenly distributed on the retina.
d. Cones are located at the center of the retina, rods at the periphery.
Answer: d

8. a. the organ of Corti in the cochlear duct; endolymph
The receptors for hearing are located in ____, which is filled with ____.
a. the organ of Corti in the cochlear duct; endolymph
b. hair cells in the vestibular duct; perilymph
c. the tectorial membrane in the tympanic duct; perilymph
d. none of the above
Answer: a